we have a very fixed idea of what "life" would be like. Here on Planet Earth it is essentially carbon based and physical.
What happens if "life" takes a different form? Perhaps it could exist in plasma rather than solid form. Perhaps it could have no physical form at all but be merely positive and negative charges.
Perhaps the gas giant planets - Jupiter, Saturn, Neptune - are teeming in life, but in a form which is tolerable to the conditions existing there. It might be that life forms exist for which we do not have the sensors to detect nor the technology with which to communicate.
They could be right here in the room now ....
Who knows,